Sanyo SPW-CR1503GDYH8 Technical Data & Service Manual page 130

2. Optional Controller (S-DDC)
¶ RS-232C cable
RS-232C cable is used to connect between the
terminals CN4 of the large P.C.B. in S-DDC and Host
Computer. The cable should be fixed to S-DDC with
nylon clamper as shown below.
6
3
7 Precautions when wiring AMY control wire
(1) Do not wire the inter-adapter control wiring such as
loop wiring as shown below.
AMY adapter
Inter-unit
control wire
AMY adapter
Inter-unit
control wire
AMY adapter
Inter-unit
control wire
1
TB1
1 2
CN4
TB1
1
Screw for fixture
Nylon cIamper
RS-232C cable
To Host Computer
S-DDC
HOST
AMY adapter
AMY
control
Inter-unit
wire
control wire
AMY adapter
Inter-unit
Prohibited control wire
AMY adapter
Inter-unit
control wire
Prohibited
(2) Branch wiring
If branching the inter-adapter control wiring, the
number of branches should be 16 or less.
(Branch length less than 1 m is not included in the
total branch number.)
3
FG
Length of AMY
control wire
between branches
should be 2 m
or more.
NOTE 1. Up to 3 wires can be branched off from
1842_M_I
2. Branch length less than 1 m is not
3. AMY control wire length between
Less than 2 m
NOT GOOD
NOTE
1843_M_I
III - 72
Control of W-ECO MULTI SYSTEM
S-DDC
The number
of branches
should be
16 or less.
AMY adapter
More
than
1 m
AMY
control
wire
AMY adapter
More
than
1 m
AMY adapter
More
than
1 m
the terminal. (Please refer to the following
example of branch wiring.)
4 wires or more
can not be branched
from the terminal.
OK NOT GOOD
included in the total branch number.
branches should be 2 meter or more as
shown below.
Less than 2 m
Less than
1 m
NOT GOOD
¶ Do not connect the power
supply cord to the AMY
CAUTION
control wire terminal.
Otherwise the P.C.B. in the
AMY adapter will be
damaged.
In case of emergency, the P.C.B. can be
used by reconnecting CN3 short plug from
A side to B side after correcting wiring.
<Turn off the power supply switch before
reconnecting the short plug>
Inter-unit
control wire
Inter-unit
control wire
Inter-unit
control wire
1844_M_I
1845_M_I
1 m or more
1846_M_I
TD831077